424 lines
14 KiB
Plaintext
424 lines
14 KiB
Plaintext
# $Header: /cvsroot/pgsql/aclocal.m4,v 1.6 2000/08/28 11:53:12 petere Exp $
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# This comes from the official Autoconf macro archive at
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# <http://research.cys.de/autoconf-archive/>
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# (I removed the $ before the Id CVS keyword below.)
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dnl @synopsis AC_FUNC_ACCEPT_ARGTYPES
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dnl
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dnl Checks the data types of the three arguments to accept(). Results are
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dnl placed into the symbols ACCEPT_TYPE_ARG[123], consistent with the
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dnl following example:
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dnl
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dnl #define ACCEPT_TYPE_ARG1 int
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dnl #define ACCEPT_TYPE_ARG2 struct sockaddr *
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dnl #define ACCEPT_TYPE_ARG3 socklen_t
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dnl
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dnl This macro requires AC_CHECK_HEADERS to have already verified the
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dnl presence or absence of sys/types.h and sys/socket.h.
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dnl
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dnl NOTE: This is just a modified version of the AC_FUNC_SELECT_ARGTYPES
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dnl macro. Credit for that one goes to David MacKenzie et. al.
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dnl
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dnl @version Id: ac_func_accept_argtypes.m4,v 1.1 1999/12/03 11:29:29 simons Exp $
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dnl @author Daniel Richard G. <skunk@mit.edu>
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dnl
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# PostgreSQL local changes: In the original version ACCEPT_TYPE_ARG3
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# is a pointer type. That's kind of useless because then you can't
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# use the macro to define a corresponding variable. We also make the
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# reasonable(?) assumption that you can use arg3 for getsocktype etc.
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# as well (i.e., anywhere POSIX.2 has socklen_t).
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#
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# arg2 can also be `const' (e.g., RH 4.2). Change the order of tests
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# for arg3 so that `int' is first, in case there is no prototype at all.
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AC_DEFUN(AC_FUNC_ACCEPT_ARGTYPES,
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[AC_MSG_CHECKING([types of arguments for accept()])
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AC_CACHE_VAL(ac_cv_func_accept_arg1,dnl
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[AC_CACHE_VAL(ac_cv_func_accept_arg2,dnl
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[AC_CACHE_VAL(ac_cv_func_accept_arg3,dnl
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[for ac_cv_func_accept_arg1 in 'int' 'unsigned int'; do
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for ac_cv_func_accept_arg2 in 'struct sockaddr *' 'const struct sockaddr *' 'void *'; do
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for ac_cv_func_accept_arg3 in 'int' 'size_t' 'socklen_t' 'unsigned int'; do
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AC_TRY_COMPILE(
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[#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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extern accept ($ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *);],
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[], [ac_not_found=no; break 3], [ac_not_found=yes])
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done
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done
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done
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if test "$ac_not_found" = yes; then
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AC_MSG_ERROR([could not determine argument types])
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fi
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])dnl AC_CACHE_VAL
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])dnl AC_CACHE_VAL
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])dnl AC_CACHE_VAL
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AC_MSG_RESULT([$ac_cv_func_accept_arg1, $ac_cv_func_accept_arg2, $ac_cv_func_accept_arg3 *])
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AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG1,$ac_cv_func_accept_arg1)
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AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG2,$ac_cv_func_accept_arg2)
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AC_DEFINE_UNQUOTED(ACCEPT_TYPE_ARG3,$ac_cv_func_accept_arg3)
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])
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# Macros to detect C compiler features
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# $Header: /cvsroot/pgsql/aclocal.m4,v 1.6 2000/08/28 11:53:12 petere Exp $
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# PGAC_TYPE_64BIT_INT(TYPE)
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# -------------------------
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# Check if TYPE is a working 64 bit integer type. Set HAVE_TYPE_64 to
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# yes or no respectively, and define HAVE_TYPE_64 if yes.
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AC_DEFUN([PGAC_TYPE_64BIT_INT],
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[define([Ac_define], [translit([have_$1_64], [a-z *], [A-Z_P])])dnl
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define([Ac_cachevar], [translit([pgac_cv_type_$1_64], [ *], [_p])])dnl
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AC_CACHE_CHECK([whether $1 is 64 bits], [Ac_cachevar],
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[AC_TRY_RUN(
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[typedef $1 int64;
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/*
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* These are globals to discourage the compiler from folding all the
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* arithmetic tests down to compile-time constants.
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*/
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int64 a = 20000001;
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int64 b = 40000005;
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int does_int64_work()
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{
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int64 c,d;
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if (sizeof(int64) != 8)
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return 0; /* definitely not the right size */
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/* Do perfunctory checks to see if 64-bit arithmetic seems to work */
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c = a * b;
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d = (c + b) / b;
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if (d != a+1)
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return 0;
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return 1;
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}
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main() {
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exit(! does_int64_work());
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}],
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[Ac_cachevar=yes],
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[Ac_cachevar=no],
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[Ac_cachevar=no
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dnl We will do better here with Autoconf 2.50
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AC_MSG_WARN([64 bit arithmetic disabled when cross-compiling])])])
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Ac_define=$Ac_cachevar
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if test x"$Ac_cachevar" = xyes ; then
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AC_DEFINE(Ac_define,, [Set to 1 if `]$1[' is 64 bits])
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fi
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undefine([Ac_define])dnl
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undefine([Ac_cachevar])dnl
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])# PGAC_TYPE_64BIT_INT
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# PGAC_CHECK_ALIGNOF(TYPE)
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# ------------------------
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# Find the alignment requirement of the given type. Define the result
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# as ALIGNOF_TYPE. If cross-compiling, sizeof(type) is used as a
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# default assumption.
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#
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# This is modeled on the standard autoconf macro AC_CHECK_SIZEOF.
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# That macro never got any points for style.
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AC_DEFUN([PGAC_CHECK_ALIGNOF],
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[changequote(<<, >>)dnl
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dnl The name to #define.
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define(<<AC_TYPE_NAME>>, translit(alignof_$1, [a-z *], [A-Z_P]))dnl
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dnl The cache variable name.
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define(<<AC_CV_NAME>>, translit(pgac_cv_alignof_$1, [ *], [_p]))dnl
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changequote([, ])dnl
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AC_MSG_CHECKING(alignment of $1)
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AC_CACHE_VAL(AC_CV_NAME,
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[AC_TRY_RUN([#include <stdio.h>
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struct { char filler; $1 field; } mystruct;
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main()
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{
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FILE *f=fopen("conftestval", "w");
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if (!f) exit(1);
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fprintf(f, "%d\n", ((char*) & mystruct.field) - ((char*) & mystruct));
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exit(0);
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}], AC_CV_NAME=`cat conftestval`,
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AC_CV_NAME='sizeof($1)',
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AC_CV_NAME='sizeof($1)')])dnl
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AC_MSG_RESULT($AC_CV_NAME)
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AC_DEFINE_UNQUOTED(AC_TYPE_NAME, $AC_CV_NAME, [The alignment requirement of a `]$1['])
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undefine([AC_TYPE_NAME])dnl
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undefine([AC_CV_NAME])dnl
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])# PGAC_CHECK_ALIGNOF
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# Macros that test various C library quirks
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# $Header: /cvsroot/pgsql/aclocal.m4,v 1.6 2000/08/28 11:53:12 petere Exp $
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# PGAC_VAR_INT_TIMEZONE
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# ---------------------
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# Check if the global variable `timezone' exists. If so, define
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# HAVE_INT_TIMEZONE.
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AC_DEFUN([PGAC_VAR_INT_TIMEZONE],
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[AC_CACHE_CHECK(for int timezone, pgac_cv_var_int_timezone,
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[AC_TRY_LINK([#include <time.h>],
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[int res = timezone / 60;],
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[pgac_cv_var_int_timezone=yes],
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[pgac_cv_var_int_timezone=no])])
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if test x"$pgac_cv_var_int_timezone" = xyes ; then
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AC_DEFINE(HAVE_INT_TIMEZONE,, [Set to 1 if you have the global variable timezone])
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fi])# PGAC_VAR_INT_TIMEZONE
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# PGAC_FUNC_GETTIMEOFDAY_1ARG
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# ---------------------------
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# Check if gettimeofday() has only one arguments. (Normal is two.)
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# If so, define GETTIMEOFDAY_1ARG.
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AC_DEFUN([PGAC_FUNC_GETTIMEOFDAY_1ARG],
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[AC_CACHE_CHECK(whether gettimeofday takes only one argument,
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pgac_cv_func_gettimeofday_1arg,
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[AC_TRY_COMPILE([#include <sys/time.h>],
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[struct timeval *tp;
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struct timezone *tzp;
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gettimeofday(tp,tzp);],
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[pgac_cv_func_gettimeofday_1arg=no],
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[pgac_cv_func_gettimeofday_1arg=yes])])
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if test x"$pgac_cv_func_gettimeofday_1arg" = xyes ; then
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AC_DEFINE(GETTIMEOFDAY_1ARG,, [Set to 1 if gettimeofday() takes only 1 argument])
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fi])# PGAC_FUNC_GETTIMEOFDAY_1ARG
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# PGAC_UNION_SEMUN
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# ----------------
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# Check if `union semun' exists. Define HAVE_UNION_SEMUN if so.
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# If it doesn't then one could define it as
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# union semun { int val; struct semid_ds *buf; unsigned short *array; }
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AC_DEFUN([PGAC_UNION_SEMUN],
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[AC_CACHE_CHECK(for union semun, pgac_cv_union_semun,
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[AC_TRY_COMPILE([#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/sem.h>],
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[union semun semun;],
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[pgac_cv_union_semun=yes],
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[pgac_cv_union_semun=no])])
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if test x"$pgac_cv_union_semun" = xyes ; then
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AC_DEFINE(HAVE_UNION_SEMUN,, [Set to 1 if you have `union semun'])
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fi])# PGAC_UNION_SEMUN
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# PGAC_FUNC_POSIX_SIGNALS
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# -----------------------
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# Check to see if the machine has the POSIX signal interface. Define
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# HAVE_POSIX_SIGNALS if so. Also set the output variable HAVE_POSIX_SIGNALS
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# to yes or no.
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#
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# Note that this test only compiles a test program, it doesn't check
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# whether the routines actually work. If that becomes a problem, make
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# a fancier check.
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AC_DEFUN([PGAC_FUNC_POSIX_SIGNALS],
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[AC_CACHE_CHECK(for POSIX signal interface, pgac_cv_func_posix_signals,
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[AC_TRY_LINK([#include <signal.h>
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],
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[struct sigaction act, oact;
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sigemptyset(&act.sa_mask);
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act.sa_flags = SA_RESTART;
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sigaction(0, &act, &oact);],
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[pgac_cv_func_posix_signals=yes],
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[pgac_cv_func_posix_signals=no])])
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if test x"$pgac_cv_func_posix_signals" = xyes ; then
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AC_DEFINE(HAVE_POSIX_SIGNALS,, [Set to 1 if you have the POSIX signal interface])
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fi
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HAVE_POSIX_SIGNALS=$pgac_cv_func_posix_signals
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AC_SUBST(HAVE_POSIX_SIGNALS)])# PGAC_FUNC_POSIX_SIGNALS
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# Macros to detect certain C++ features
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# $Header: /cvsroot/pgsql/aclocal.m4,v 1.6 2000/08/28 11:53:12 petere Exp $
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# PGAC_CLASS_STRING
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# -----------------
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# Look for class `string'. First look for the <string> header. If this
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# is found a <string> header then it's probably safe to assume that
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# class string exists. If not, check to make sure that <string.h>
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# defines class `string'.
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AC_DEFUN([PGAC_CLASS_STRING],
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[AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_CHECK_HEADER(string,
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[AC_DEFINE(HAVE_CXX_STRING_HEADER)])
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if test x"$ac_cv_header_string" != xyes ; then
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AC_CACHE_CHECK([for class string in <string.h>],
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[pgac_cv_class_string_in_string_h],
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[AC_TRY_COMPILE([#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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],
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[string foo = "test"],
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[pgac_cv_class_string_in_string_h=yes],
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[pgac_cv_class_string_in_string_h=no])])
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if test x"$pgac_cv_class_string_in_string_h" != xyes ; then
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AC_MSG_ERROR([neither <string> nor <string.h> seem to define the C++ class \`string\'])
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fi
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fi
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AC_LANG_RESTORE])# PGAC_CLASS_STRING
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# PGAC_CXX_NAMESPACE_STD
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# ----------------------
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# Check whether the C++ compiler understands `using namespace std'.
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#
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# Note 1: On at least some compilers, it will not work until you've
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# included a header that mentions namespace std. Thus, include the
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# usual suspects before trying it.
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#
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# Note 2: This test does not actually reveal whether the C++ compiler
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# properly understands namespaces in all generality. (GNU C++ 2.8.1
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# is one that doesn't.) However, we don't care.
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AC_DEFUN([PGAC_CXX_NAMESPACE_STD],
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[AC_REQUIRE([PGAC_CLASS_STRING])
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AC_CACHE_CHECK([for namespace std in C++],
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pgac_cv_cxx_namespace_std,
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[
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AC_LANG_SAVE
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AC_LANG_CPLUSPLUS
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AC_TRY_COMPILE(
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[#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_CXX_STRING_HEADER
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#include <string>
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#endif
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using namespace std;
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], [],
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[pgac_cv_cxx_namespace_std=yes],
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[pgac_cv_cxx_namespace_std=no])
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AC_LANG_RESTORE])
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if test $pgac_cv_cxx_namespace_std = yes ; then
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AC_DEFINE(HAVE_NAMESPACE_STD, 1, [Define to 1 if the C++ compiler understands `using namespace std'])
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fi])# PGAC_CXX_NAMESPACE_STD
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# $Header: /cvsroot/pgsql/aclocal.m4,v 1.6 2000/08/28 11:53:12 petere Exp $
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# PGAC_PATH_FLEX
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# --------------
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# Look for Flex, set the output variable FLEX to its path if found.
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# Avoid the buggy version 2.5.3. Also find Flex if its installed
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# under `lex', but do not accept other Lex programs.
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AC_DEFUN([PGAC_PATH_FLEX],
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[AC_CACHE_CHECK([for flex], pgac_cv_path_flex,
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[# Let the user override the test
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if test -n "$FLEX"; then
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pgac_cv_path_flex=$FLEX
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else
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pgac_save_IFS=$IFS
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IFS=:
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for pgac_dir in $PATH; do
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if test -z "$pgac_dir" || test x"$pgac_dir" = x"."; then
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pgac_dir=`pwd`
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fi
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for pgac_prog in flex lex; do
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pgac_candidate="$pgac_dir/$pgac_prog"
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if test -f "$pgac_candidate" \
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&& $pgac_candidate --version >/dev/null 2>&1
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then
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echo '%%' > conftest.l
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if $pgac_candidate -t conftest.l 2>/dev/null | grep FLEX_SCANNER >/dev/null 2>&1; then
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if $pgac_candidate --version | grep '2\.5\.3' >/dev/null 2>&1; then
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pgac_broken_flex=$pgac_candidate
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continue
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fi
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pgac_cv_path_flex=$pgac_candidate
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break 2
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fi
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fi
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done
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done
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IFS=$pgac_save_IFS
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rm -f conftest.l
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: ${pgac_cv_path_flex=no}
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fi
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])[]dnl AC_CACHE_CHECK
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if test x"$pgac_cv_path_flex" = x"no"; then
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if test -n "$pgac_broken_flex"; then
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AC_MSG_WARN([
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***
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The Flex version 2.5.3 you have at $pgac_broken_flex contains a bug. You
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should get version 2.5.4 or later.
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###])
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fi
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AC_MSG_WARN([
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***
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Without Flex you won't be able to build PostgreSQL from scratch, or change
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any of the scanner definition files. You can obtain Flex from a GNU mirror
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site. (If you are using the official distribution of PostgreSQL then you
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do not need to worry about this because the lexer files are pre-generated.)
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***])
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fi
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if test x"$pgac_cv_path_flex" = x"no"; then
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FLEX=
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else
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FLEX=$pgac_cv_path_flex
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fi
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AC_SUBST(FLEX)
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AC_SUBST(FLEXFLAGS)
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])# PGAC_PATH_FLEX
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#
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# Autoconf macros for configuring the build of Python extension modules
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#
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# $Header: /cvsroot/pgsql/aclocal.m4,v 1.6 2000/08/28 11:53:12 petere Exp $
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#
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# PGAC_PROG_PYTHON
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# ----------------
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# Look for Python and set the output variable `PYTHON'
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# to `python' if found, empty otherwise.
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AC_DEFUN([PGAC_PROG_PYTHON],
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[AC_CHECK_PROG(PYTHON, python, python)])
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# PGAC_PATH_PYTHONDIR
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# -------------------
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# Finds the names of various install dirs and helper files
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# necessary to build a Python extension module.
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#
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# It would be nice if we could check whether the current setup allows
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# the build of the shared module. Future project.
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AC_DEFUN([PGAC_PATH_PYTHONDIR],
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[AC_REQUIRE([PGAC_PROG_PYTHON])
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[if test "${PYTHON+set}" = set ; then
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python_version=`${PYTHON} -c "import sys; print sys.version[:3]"`
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python_prefix=`${PYTHON} -c "import sys; print sys.prefix"`
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python_execprefix=`${PYTHON} -c "import sys; print sys.exec_prefix"`
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python_configdir="${python_execprefix}/lib/python${python_version}/config"
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python_moduledir="${python_prefix}/lib/python${python_version}"
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python_extmakefile="${python_configdir}/Makefile.pre.in"]
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AC_MSG_CHECKING(for Python extension makefile)
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if test -f "${python_extmakefile}" ; then
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AC_MSG_RESULT(found)
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else
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AC_MSG_RESULT(no)
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AC_MSG_ERROR(
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[The Python extension makefile was expected at \`${python_extmakefile}\'
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but does not exist. This means the Python module cannot be built automatically.])
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fi
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AC_SUBST(python_version)
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AC_SUBST(python_prefix)
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AC_SUBST(python_execprefix)
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AC_SUBST(python_configdir)
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AC_SUBST(python_moduledir)
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AC_SUBST(python_extmakefile)
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else
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AC_MSG_ERROR([Python not found])
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fi])# PGAC_PATH_PYTHONDIR
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